LRB非线性恢复力计算方法研究应用

Study and Application of Calculation Method for LRB's Non-linear Resilience

通过使用masing规则确定隔震层铅芯橡胶支座(LRB)的恢复力和加卸载路线,求出其在地震动力下的瞬时刚度,将masing规则引入应用于Newmarkβ-法中求解非线性动力问题。通过编制程序,对算例进行研究分析,结果表明该方法可行高效,得出层间隔震结构隔震周期对上下部结构地震反应的影响规律。

By using masing-rule to determine LRB＇s resilience and loading-unloading process,its instantaneous stiffness is calculated in the ground motion,then,the masing-rule is applied into Newmark-β to solve nonlinear dynamic problems.By establishing processes,the algorithms of the examples are analyzed.The results show that this method is effective,and some conclusions are summarized about how the seismic responses would be affected by isolation period changing.